| OLD | NEW |
|---|
| 1 <!doctype HTML> | 1 <!doctype HTML> |
| 2 <script src="resources/composited-scroll.js"></script> | 2 <script src="resources/composited-scroll.js"></script> |
| 3 <script> | 3 <script> |
| 4 if (window.testRunner) | 4 if (window.testRunner) |
| 5 testRunner.dumpAsText(); | 5 testRunner.dumpAsText(); |
| 6 | 6 |
| 7 if (window.internals) | 7 if (window.internals) |
| 8 internals.runtimeFlags.compositeOpaqueScrollersEnabled = true; | 8 internals.runtimeFlags.compositeOpaqueScrollersEnabled = true; |
| 9 | 9 |
| 10 onload = function() { | 10 onload = function() { |
| 11 if (!window.testRunner || !window.internals) | 11 if (!window.testRunner || !window.internals) |
| 12 return; | 12 return; |
| 13 | 13 |
| 14 var result = ""; | 14 var result = ""; |
| 15 result += "Should have opaque composited scrolling contents layer: "; | 15 result += "Should have opaque composited scrolling contents layer: "; |
| 16 if (hasOpaqueCompositedScrollingContentsLayer(JSON.parse(window.internals.la
yerTreeAsText(document)))) | 16 if (hasOpaqueCompositedScrollingContentsLayer(JSON.parse(window.internals.la
yerTreeAsText(document)))) |
| 17 result += "Pass.\n"; | 17 result += "Pass.\n"; |
| 18 else | 18 else |
| 19 result += "Fail.\n"; | 19 result += "Fail.\n"; |
| 20 testRunner.setCustomTextOutput(result); | 20 testRunner.setCustomTextOutput(result); |
| 21 } | 21 } |
| 22 </script> | 22 </script> |
| 23 <style> | 23 <style> |
| 24 #scroller { | 24 #scroller { |
| 25 background: white local content-box; | 25 background: white local content-box; |
| 26 border: 10px solid rgba(0, 255, 0, 0.5); | 26 border: 10px solid rgba(0, 255, 0, 0.5); |
| 27 contain: paint; |
| 27 overflow: scroll; | 28 overflow: scroll; |
| 28 width: 200px; | 29 width: 200px; |
| 29 height: 200px; | 30 height: 200px; |
| 30 } | 31 } |
| 31 .spacer { | 32 .spacer { |
| 32 height: 300px; | 33 height: 300px; |
| 33 } | 34 } |
| 34 </style> | 35 </style> |
| 35 <!-- The scroller's Scrolling Contents Layer should be opaque due to the opaque | 36 <!-- The scroller's Scrolling Contents Layer should be opaque due to the opaque |
| 36 color background. Even though the background has a content-box clip there | 37 color background. Even though the background has a content-box clip there |
| 37 is no gap because the scroller has no padding. This means that we will be | 38 is no gap because the scroller has no padding. This means that we will be |
| 38 able to draw text with subpixel anti-aliasing. | 39 able to draw text with subpixel anti-aliasing. |
| 39 --> | 40 --> |
| 40 <div id="scroller"><div class="spacer"></div></div> | 41 <div id="scroller"><div class="spacer"></div></div> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2522043002:
Reland "Only promote opaque scrollers which are stacking contexts." (Closed)
